Mammoth Cave National park may soon see a major expansion after two prominent Kentucky lawmakers introduced a new bill.

Kentucky’s most well-known national park could be getting bigger, as U.S. Senator Mitch McConnell, R-Louisville, and U.S.

Sen. Mitch McConnell and Rep. Brett Guthrie both filed the Mammoth Cave National Park Boundary Adjustment Act on Thursday.

The surface of Mammoth Cave National Park encompasses about 80 square miles. No one knows how big the underside is. More than 365 miles of the five-level cave system have been mapped, and new ...

With over 400 mapped miles, Mammoth Cave National Park, just outside Bowling Green, Kentucky, is the longest known cave system in the world. The only way to see its many subterranean rooms and ...

Explore Mammoth Cave National Park, the longest cave system on Earth, featuring the richest known habitat for cave wildlife in the world. It may be difficult to think of caves as spacious and grand, ...

Mammoth Cave National Park is the longest cave system in the world, according to the Kentucky Department of Fish and Wildlife Resources. Its caverns formed after thousands of years of rainfall and ...